Why are monitors landscape and books portrait oriented?

1. Why use monitor in portrait mode?
2. Why are books portrait not landscape?
3. Why are computer screens horizontal?
4. Can all monitors be used in portrait mode?

Why use monitor in portrait mode?

It's easier to write, edit and read long lines of programming code in portrait mode. When you can read better and faster, you use less time and produce more output. In addition to productivity, a vertical monitor enables users to see more functions, which improves fluidity.

Why are books portrait not landscape?

There is actually an important reason why most books today are published in portrait mode: Cost. Books are printed from large sheets of paper which are then folded and trimmed. The setup on the sheet for a book in portrait mode is necessarily different from the setup for a book printed in landscape.

Why are computer screens horizontal?

Horizontal screens were common way before computers went mainstream (goo.gl/WdHgrB). Except for the very first (experimental) computers, computers had the same display ratio as televisions back then. The television ratio is deduced from movie which was deduced from the human view angle.

Can all monitors be used in portrait mode?

Most monitors on the market aren't specifically designed for use in a vertical orientation. Instead, they have stands that allow the monitor to rotate vertically.